Preservation of latex



Patented Apr. 21, 1931 UNITED STATES PATENT OFFICE ALEXANDER A. NIKITIN. OF IPASSAIC. NEW .TERSE Y. ASSIGNOR TO THE NAUGATUCK CHEMICAL COMPANY1OF NAUGATUCK, CONNECTICUT, A. CORPORATION OF CON- No Drawing.

tion to an extent depending on the particular .naterial employed; It is not however known that the action of these materials can be enhanced by using in connection therewith, certain aliphatic hydrocarbons which in themselves are not protective bodies.

Accordingly the invention comprises adding to .latex a small amount of a mono-dior trihydroxy phenol or homologue or analogue thereof, along with a small amount of an aliphatic hydrocarbon such as kerosene or gasoline. The amount of phenol or like body may vary, good results being obtained with 1 to 2 parts in 1000 parts of latex. Latex so treated will be preserved over a period of months without hurting the rubber.

Example 1.-.2 part of phenol is added to 1 cc. of kerosene and the emulsified productis then added to 200 cc. of latex. By such a combination latex is preserved over a period of several months or more.

Ezrample 2.If .1 part of phenol is added to .3 part of paraffin oil and the two added to 100 cc. of latex, the said latex is preserved over a period of five months.

With the detailed disclosure above given it is obvious that modifications will suggest themselves and it is not desired to limit the invention otherwise than as set forth in the appended claims.

The term a phenol in the claims is to be construed broadly as covering phenol, its homologues or analogues.

' Having thus described my invention, what I claim and desire to protect by Letters Patent is:

1. The method of preserving latex which PRESERVATION 0F LATEX Application filed July 10, 1929. Serial No. 377,340.

3. The-method of preserving latex which comprises adding to latex a small amount of a phenol and kerosene.

4:. The method of preserving latex which comprises adding to latex a small amount of a phenol and gasoline.

5. Latex preserved with a small amountof 2k); phenol and a liquid petroleum hydrocaron. v

6. Latex preserved with a small amount of a phenol and kerosene.

7 The method of preserving latex which comprises adding to latex a small amount of phenol and kerosene.

8. The method of preserving latex which comprises adding to latex a small amount of phenol and gasoline.

9. Latex preserved with a small amount of phenol and a liquid petroleum hydrocarbon.

10. Latex preserved with asmall amount of phenol and kerosene.

11. Latex preserved with a small amount of phenol and gasoline.

Signed at P'assaic, county of Passaic, State 

